Road scraper



April 19, 1932. l L. o. BECK ROAD SCRAPER Filed May l2, 1951 5 Sheets-Sheet l Inventor By y tiomey April 19, 1932. o. BECK 1,854,167

ROAD SCRAPER 5 Sheets-Sheet 2 Filed May l2, 1931 L. b. BECK ROAD SCRAPER April `19', 1932.

Filed May 12, 1931 5 Sheets-Shea?l 5 f1 Homey April 19, 1932.v 1 o. BECK 1,854,167

ROAD SCRAPER Filed May 12, 195i 5 sheets-sheet 4 `Q\ Inventor L. O. BECK ROAD SCRAPER April 19, 1932.

Filed May l2, 1931 5 Sheets-Sheet 5 Inventor lltorney Patented Apr. 19, 1932 UNITED STTES LENNY OLE BECK, OF REGINA, SASKATCHEWAN, CANADA ROAD SCRAPER Application filed May 12,

This invention relates to certain new and useful improvements in road scrapers, and the primary objectof this invention is to provide a device vof the character above mentioned, which may be operatively connected with a` tractor or like vehicle, and preferably located in front of the tractor for scraping the road. y

A still further object of the invention 1s to provide a road scraper in the nature of an attachment which may be steered by the operator of the tractor.

A still further object of the invention is to provide a road scraper of the character above mentioned, having' means for supporting an operator, together with means for moving the scraper blade into and out of engagement with the ground. n

A still further object of the invention is to Z0 provide in a road scraper of the character mentioned, means for dumping the material as may be gathered on the blade during scraping of the road.

Other objects and advantages of the invention will become apparent from a study of the following description, taken in connection with the accompanying drawings wherein: i Y

Figure 1 is al side elevational view of the road scraper, the same being shown' as applied to a tracto-r. Y

. Figure 2 is a top plan view of the scraper.

Figures 3 and 4 are detail sectionalelevational views taken substantially on the lines 3-3 and lL-l respectively of FigureZ.

. Figure 5 is a fragmentary detail sectional elevational view for showing certain of the means Vfor steering the scraper.

Figure 6 is a fragmentary detail sectional elevational view showing the sliding member of a clutch forming part of the invention.

Figure 7 is a fragmentary'detail sectional elevational view showing the two members of the clutch separated and in addition other certain details of construction to be hereinafter more fully referred to.

Figure 8 is a fragmentary side elevational view of a. lower portion of a rack bar and associated structure.

Figure 9 is a detail sectionalfelevational Y parallel bars 5 pivoted vat their rear ends to 1931. serial no. 536,843.

view taken substantially onthe line 9 9 of Figure- 4.' n

Figure 10 is fragmentary detailsectional elevational view showing the manner of operativelyconnecting a manually controlled shaft with a pinion carrying shaft as will be more deinitely pointed out in the description. i'

Figure 11 is a detail sectional elevational Y view taken substantiallyk on the line 11-11 of Figure 3.

Referring more in detail to the drawings it will be seen that my improved scraper comprises a pair of relatively elongated spaced the rear axle of a conventional type of tractor shown in broken lines in Figure 1 and designated by the reference character T.

As shown', the bars5 extend forwardly beyond the front of the tractor, and at their forward ends rotatably support therebetween a scraper element designated generally by the reference character S.

Scraper S comprises a pair of disks 6 provided with stubpshafts 7 journalled in the forward ends ofthe bars 5. The disks 6 lare connected together by a semi-cylindrical scraper blade 8, formed integrally with or otherwise secured at its ends to thel disks 6.

l Rearwardlyv ofI the scraper S, there ,are mounted on the bars 5 oppositely disposed vertical plates 9. Plates 9 at their upper ends are connected by a pair of relatively spaced transverse channel bars 10 and 11. Mounted on the bars 10 and 11 is a substantially U- shaped frame elongated longitudinally'and comprising parallel side bars 12 and a forward end bar 13. Mounted in thelframe is a suitable platform 14. i l Y Plates 9 between the forward lower corners` thereof support a rod 15. Rockably supported on the rod 15 is a plate 16 provided at the forward edge thereof with a sleeve 17 through which extends the rod 15. At its rearward g5 end the plate 16 is provided with a sleeve 18 y within which is fixed a transverse rod 19.

Mounted in any suitable wellknown manner on each end of the iiXed rod 19- is a steering knuckle l20 which includes among other' parts a stub shaft onkwhich is journalled a wheel 21 and the vertical pivot of the steering knuckle is provided with the usual drag link 22. rThe drag links 22 are connected by a rod 23 that is pivotally connected to the drag links, and intermediate its ends bar 23 is provided with a rack bar 24.

Fixedly mounted above the bar 23 is a bar 25, and the bar 25 intermediate its ends is provided with forwardly extending gear casing 26 which houses the rack bar 24 and a pinion 27 which meshes with the rack bar 24 and is splined on the lower end of a vertically disposed shaft 28.

The upper end of shaft 28 is j ournalled in a gear housing` 29 and has keyed thereto a worm gear 30 that is in mesh with a worm wheel 31 provided on a horizontal shaft 32 that is journalled between the rear ends of the side frame bars 12.

On one end of shaft 32 there is provided a bevel gear 33 that is in mesh with a bevel gear 34 on one end of a steering rod 35. Said one end of steering rod 35 is joui-nailed in a bearing 36 that is rockably mounted between said one end of shaft 32 and a suitable bracket 37. Steering rod 35 extends rearwardly into the cab of the tractor T and can be easily manipulated by the operator of the tractor'.

From what has been hereinbefore stated, it will be apparent that to steer the scraper, the steering rod 35 is rotated in the desired direction, and movement of rod 35 is transmitted to the shaft 32 and from the shaft 32 to the shaft 28 and from the shaft 28 through the medium of the gear 27 meshing with the rack bar 24, causing the bar 23 to swing toward the right or left for turning the steering knuckles 20 for changing the course either toward the right or left.

Rising from adjacent each end of the. rod 19 is a rack bar 38 and suitable substantially U-shaped guides 39 are provided for the rack bars. Y

Journalled between the plates 9 a shaft 40 provided with pinions 41 located on the shaft 40 between the oppositeside portions of the guides 39 and in mesh with the teeth of the rack bars 38.

A downwardly and rearwardly extending gear casing 42 is supported from the platform 14 and suitably journalled in the casing 42 is the lower end of a. control shaft 43 provided with a worm 44 in mesh with a worm gear 45 splined to the shaft 43. Shaft 43 extends upwardly and forwardly and at its upper end is journalled in a. gear case 46 and at said upper end is connected by gearing 47 to a. shaft 48 journalled in the gea-r case 46. Suitably keyed to the shaft 48 is a h and wheel 49.

To raise the blade 8 of the scraper S out of engagement with the ground, the hand wheel 49 is rotated for transmitting movement to shaft 43 which in turn transmits movement to sha-ft 40 to thereby cause the worm wheels 41 to travel downwardly with respect to the rack bars 38, and as is thought apparent, through the medium of the rod 19, plate 16, and rod 15 cause an upward push to be exerted on the pla-tes 9 thus raising the forward ends of the bars 5 swinging the bars about the pivot provided therefor through the medium of the rear axle of the tractor T thereby raising the blade of the scraper S out of ground engaging position.

Obviously, to lower' the blade 8 of the scraper S into ground engaging position the operation is just the reverse.

1n this connection, it is to be noted, that the transverse bars 10 and 11 support therebetween brackets 50 thatat their forward ends are provided with extensions 50. Pivoted to the extensions 50 are the forward ends of curved connecting links 51. rfhe links 51 at their rear ends are pivotally connected to the upper end of fixed posts 52 rising from the ends of the rod 19 adjacent the rack bars 38.

Journalled between the plates 9 forwardly of the shaft 40 is a rotatable sha-ft 53. Shaft 53 has chain and sprocket connections 54 with the stub shafts 7 of the disks 6. A portion of shaft 53 extends through a gear casing 55 suitably supported on an end bracket 50 and on the shaft 53 is a worm gear wheel 56 located within the gear housing 55 and in mesh with a worm 57 on the lower end of a control shaft 58.

Shaft 58 extends upwardly and forwardly and at its upper end is journalled in a gear housing 59 that is disposed adjacent the left hand forward corner of the platform 14 directly opposite to the gear casing 46. The upper end of shaft 58 is connected to a shaft 60 journalled in the gear casing 59 through the medium of suitable gearing 61. The shaft 60 at one end thereof is provided with a hand wheel 62.

As shown in Figure 7, gear 56 is provided on one end of a sleeve 63, the other end of which sleeve is equipped with a clutch element 64. Sleeve 63 is loose on shaft 53 and the clutch element 64 of said sleeve is adapted to be engaged by a complemental clutch element 65 suitably splined to the shaft 53 and equipped with an operating or control handle 66 that extends upwardly through a suit-able opening provided therefor in the platform 14.

To control the cutting or scraping depth of the blade 8 of said scraper S, clutch elements 64 and 65 are engaged one with the other. `Wheel 62 is then rotated, and movement of shaft 60 is transmitted to shaft 58 and from the shaft 58 to the shaft 53 so that through the medium of the chain and sprocket connections 54. the stub shafts 7 are rotated in the proper direction thus rotating the disks 6 and the blade 8 carried thereby for positioning the scrapingedge of the blade 8 at the desired angle relative to the ground.

As is apparent to those skilled in the art` as the scraper' is pushed forwardly of the tractor, and during scraping operation, certain of the dirt will be received or scooped into the blade 8.

When the scraping operation has been completed and it is desired to dump the dirt gathered by the blade 8, lever 66 is suitably manipulated for disengaging the clutch elements 64 and 65. This disengagement of the clutch elements 64 and 65 is usually effected subsequent to the raising of the forward ends of the bars 5 after the scraping operation has been completed, the raising of the forward ends of the bars being accomplished in the manner and by reason of the mechanism hereinbefore 'described in detail, Subsequent to the disengagement of the clutch elements 64 and 65, the forward ends of the bars 5 are lowered for moving the blade 8 of the Scraping device Sinto engagement with the ground and the tractor is then moved forwardly a slight distance, resulting in a rotation of the scraping device S, and during this rotation of the scraping device, the dirt will be dumped from the blade 8 in a manner thought apparent.l

Even though I have herein shown and described the preferred embodiment of the invention, it is to be understood that the same is susceptible of changes, modifications and improvements coming within the scope of the appended claims.

Having thus described my invention, whatv I claim as new is:

1. In a device of the character described, a pair of pivotally mounted bars, a scraping device rotatably supported between said bars and including a substantially semi-cylindrical scraping blade, a pair of plates rising from said bars rearwardly of the device, a shaft journalled between said plates, means for transmitting movement from said shaft to the scraping device, and manual means for rotating said shaft whereby to vary the angular effective position of the blade with respect to the surface being treated, a plate member pivoted between the first mentioned plates, wheels mounted at the ends of said plate and adapted for swinging movement on a vertical aXis, and steering mechanism operatively connected kwith the wheels for changing the course to the right and left.

2. In a device of the character described, a pairrof pivotally mounted bars, a scraping device rotatably supported between said bars and including a substantially semi-cylindrical scraping blade, a pair of plates rising from said bars rearwardly of the device, a shaft journalled between said plates, means for transmitting movement from said shaft to the scraping device, and manual means for rotating said shaft whereby to vary the angular effective position of the blade with respect to the surface being treated, a plate member pivoted between the first mentioned plates, wheels mounted at the ends of said plate andV adapted for swinging movement Dna vertical axis, and steering mechanism operatively connected with the wheels for changing the course to the right and left, a rack bar connected with said rockably mounted plate, a second shaft journalled between the fir-st mentioned plates, a pinion on the second shaft and having its teeth in mesh with the teeth of the rack bar,and means for rotating said second shaft for effecting a vmovement, of said bars about their pivots for raising and lowering the scraping blade with respect to the surface being treated.

.3. A scraping vdevice comprising in combinationa pair of parallel bars adapted to be pivotally mounted at one end on the aXle of a tractor or the like, a scraping device rotatably supported between the free ends' of said bars,'a platform lsupported above said scraping device,fmeans rising from said bars for supporting said platform, wheels for supporting said bars, steering mechanism -operatively connected withthe wheels for steerlng said device independently ofthe tractor, and mean-s operatively connecting said bars with saidwheels whereby to effect a raising of the forward end of the bars relative to said wheels for moving the scraping device i out of ground engaging position. A l

4. A scraping device comprising in combination a pair of parallel bars adapted to be pivotally mounted at one end on the axle of a tractor or the like, a scraping device rotatably supported between the free ends of said bars, a platform supported above said scraping device, means rising from said bars for supporting said platform, wheels'for sup-k porting said bars, steering mechanism operatively connected with the wheels for steering said device independently of the tractor, and means operatively connecting said bars Vwith said wheels wherebyto effect a raising of the forward end of the bars relative to said wheels for moving the scraping device out offground engaging. position, means for retaining said scraping device against rotation when the scraping device is in operative position with* respect vto the ground, and

means for releasing said scraping device to permit rotation of the scraping device for dumping purposes.

5. A scraping device comprising in combination a pair of parallel bars adapted to be pivotally mounted at one end on the axle of a tractor or the like, a scraping device rotatably supported between the free ends of said bars, a platform supported above said scraping device, means rising from said bars for supporting said platform, wheels for sup? porting said bars, steering mechanism operatively connected with the tractor, and means operatively connecting said bars with said wheels whereby to eect a raising of the forward end of the bars relative to said wheels for moving the scraping device out of ground engaging position, means for retaining said scraping device against rotation when the scraping device is in operative position with respect to the ground, and means for releasing said scraping device to permit rotation of the scraping device for dumping purposes, and control means controlled by an operator on the platform for controlling the raising and lowering of said bars.

6. A scraping device comprising in combination a pair of parallel bars adapted to be pivotally connected at one end to the aXle of a tractor or the like, a pair of ground engaging steering wheels, means for supporting said bars from said wheels to permit a raising and lowering of the free ends of the bars relative to the wheels, steering mechanism for the wheels and including a control member terminating within the cab of the tractor, a rotatable scraper blade mounted between the forward ends of the bars, manual means ,for locking said scraper blade against rotation during scraping operation of the device, said last mentioned means including means for adjusting the elfective position of the scraping device with respect to the surface Ato be treated.

7. In a scraping device, a pair of parallel bars, a scraping blade mounted between the bars, a plate pivotally mounted between the bars, steering wheels supporting the free end Vof the plate and adapted to swing on vertical axes, steering mechanism operatively con- 4 nected with the wheels changing the course J to the right and left, and rack and pinion means connected with said plate for swinging the latter about its pivots.

8. In a scraping device, a pair of parallel bars, a scraping blade mounted therebetween, a member pivotally mounted between the bars, steering wheels supporting the free end of the member, steering mechanism connected with the wheels, substantially vertically shiftable rack bars, guide means for the rack bars, means connecting the rack bars with the pivoted member, a rotatably ,mounted shaft, pinionsion the shaft meshing with the rack bars, and means for rotating the shaft.

In testimony whereof I affix my signature.

LENNY OLE BECK. 

